Door handle assembly with locking structure

Abstract

The utility model relates to the technical field of hardware for doors, and discloses a door handle assembly with a locking structure, which comprises a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball. A locking plate is formed on one side of the first mounting seat, and a ball groove is formed in the inner side of the locking plate; a cylindrical handle head is fixedly arranged in a shaft neck part of the inner handle, one end of the cylindrical handle head is rotationally arranged on the first mounting seat and is connected with the square core, and a ball hole opposite to the ball groove is formed in the side wall of the cylindrical handle head; the outer handle is rotationally connected to the second mounting seat, and one end is connected with the square core; the cam is rotationally arranged in the handle head, a containing groove and an ejection groove which are communicated in the circumferential direction are formed in the periphery of the cam, and the radial depth of the ejection groove is smaller than that of the containing groove. The transmission block is slidably arranged in the journal portion of the inner handle, one end of the transmission block is provided with a deflector rod extending out of the journal portion, the other end of the transmission block is in linkage with the cam, and the transmission block can drive the cam to rotate when sliding. The door handle assembly with the locking structure can achieve the back locking function only by means of the structure of the door handle assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of door hardware, and in particular to a door handle assembly with a locking structure. Background Art

[0002] Door locks are usually equipped with an anti-lock mechanism, which is mainly realized by an anti-lock knob / anti-lock button set on the front face of the door handle or separately set on the side of the door handle. Turning the anti-lock knob or pressing the anti-lock button drives the linkage device inside the lock body to rotate, thereby locking the door. This type of anti-lock mechanism requires the use of the linkage device inside the lock body to achieve anti-locking. Its structure is relatively complex. Once it fails, many parts need to be replaced, and even the handle and lock need to be replaced at the same time. In addition, this type of anti-lock mechanism will also increase the structure of the outer surface of the door lock, especially the front visible surface, which is not suitable for minimalist style application scenarios. Utility Model Content

[0003] The utility model is made to solve the above-mentioned technical problems, and its purpose is to provide a door handle assembly with a locking structure, which can achieve the anti-locking function only by relying on its own structure without the help of related structures in the door lock.

[0004] In order to achieve the above-mentioned objectives, in the first aspect, the utility model provides a door handle assembly with a locking structure, comprising a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball; wherein a first mounting hole is provided in the middle portion of the first mounting seat, a locking plate is formed on the side close to the inner handle, and a ball groove is provided on the inner side of the locking plate; a cylindrical handle head is fixedly provided in the neck portion of the inner handle, one end portion of the handle head is rotatably provided in the first mounting hole and connected to the square core, and can only be rotated around its own axis when in use, and a ball hole is provided on the side wall of the handle head opposite to the ball groove; the outer handle is rotatably connected to the first mounting hole The cam is rotatably arranged in the handle head, and its outer circumference is provided with a receiving groove and an ejection groove connected in the circumferential direction, and the radial depth of the ejection groove is smaller than the radial depth of the receiving groove; the transmission block is slidably arranged in the neck portion of the inner handle, and one end of the transmission block is provided with a lever extending to the outside of the neck portion, and the other end is linked with the cam, and the transmission block can drive the cam to rotate when sliding, wherein when the transmission block is on one side of the neck portion, the locking ball is in the ejection groove, the ball hole and the ball groove, and when the transmission block slides to the other side, it drives the cam to rotate and makes the receiving groove, the ball hole and the ball groove relative to each other.

[0005] Preferably, a rotating wheel is fixedly provided at one end of the cam, a spiral guide groove is provided on the rotating wheel, a latch slidably assembled in the guide groove is provided at the other end of the transmission block, and the transmission block is axially slidably arranged in the neck portion.

[0006] Preferably, the rotating wheel is a cylindrical structure, and the side wall is provided with two guide grooves, and the two ends of the latch are respectively slidably assembled in the two guide grooves.

[0007] Preferably, more than two locking plates and ball grooves are evenly provided on the first mounting seat; more than two ball holes are evenly provided on the handle head; more than two accommodating grooves and ejection grooves are evenly provided on the cam; and the numbers of the ball grooves, ball holes, accommodating grooves, ejection grooves and locking balls are the same.

[0008] Preferably, it also includes: a connecting rod rotatably arranged in the square core, one end of which is fixedly connected to the cam and the other end of which extends into the outer handle; an emergency knob arranged on the outer handle and one end of which is connected to the connecting rod.

[0009] Preferably, a positioning hole is provided on the outer side wall of the cam, a compression spring and a positioning ball are provided in the positioning hole, and a first positioning groove and a second positioning groove are provided on the inner wall of the handle head, wherein when the locking ball is in the ejection groove, the ball hole and the ball groove, the compression spring presses the positioning ball tightly against the first positioning groove; when the accommodating groove, the ball hole and the ball groove are opposite to each other, the compression spring presses the positioning ball tightly against the second positioning groove.

[0010] In order to achieve the above-mentioned purpose, in a second aspect, the utility model provides a door handle assembly with a locking structure, comprising a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball; wherein a first mounting hole is provided in the middle of the first mounting seat, and the inner handle is rotatably connected to the first mounting seat, and one end is connected to the square core; a second mounting hole is provided in the middle of the second mounting seat, and a locking plate is formed on the side close to the outer handle, and a ball groove is provided on the inner side of the locking plate; a cylindrical handle head is fixedly provided in the neck portion of the outer handle, and one end of the handle head is rotatably provided in the second mounting hole and connected to the square core, and can only rotate around its own axis when in use. The side wall of the handle head is provided with a ball hole opposite to the ball groove; the cam is rotatably arranged in the handle head, and its outer periphery is provided with a receiving groove and an ejection groove connected in the circumferential direction, and the radial depth of the ejection groove is smaller than the radial depth of the receiving groove; the transmission block is slidably arranged in the neck portion of the inner handle, one end of which is provided with a lever extending to the outside of the neck portion, and the other end is linked to the cam, and the transmission block can drive the cam to rotate when sliding, wherein when the transmission block is on one side of the neck portion, the locking ball is in the ejection groove, the ball hole and the ball groove, and when the transmission block slides to the other side, it drives the cam to rotate and makes the receiving groove, the ball hole and the ball groove relative to each other.

[0011] Preferably, a rotating wheel is fixedly provided at one end of the cam, a spiral guide groove is provided on the rotating wheel, the other end of the transmission block is slidably arranged in the square core, and a pin is slidably assembled in the guide groove at the end, and the transmission block is axially slidably arranged in the neck portion.

[0012] Preferably, it further comprises: an emergency knob, which is arranged on the outer handle and one end of which is connected to the cam.

[0013] Preferably, a positioning hole is provided on the outer side wall of the cam, a compression spring and a positioning ball are provided in the positioning hole, and a first positioning groove and a second positioning groove are provided on the inner wall of the handle head, wherein when the locking ball is in the ejection groove, the ball hole and the ball groove, the compression spring presses the positioning ball tightly against the first positioning groove; when the accommodating groove, the ball hole and the ball groove are opposite to each other, the compression spring presses the positioning ball tightly against the second positioning groove.

[0014] In order to achieve the above-mentioned purpose, in a third aspect, the utility model provides a door handle assembly with a locking structure, comprising a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball; wherein a first mounting hole is provided in the middle of the first mounting seat, a locking plate is formed on the side close to the inner handle, and a ball groove is provided on the inner side of the locking plate; a second mounting hole is provided in the middle of the second mounting seat, a locking plate is formed on the side close to the outer handle, and a ball groove is provided on the inner side of the locking plate; cylindrical handle heads are fixed in the neck portions of the inner handle and the outer handle, the two handle heads are symmetrically arranged and respectively connected to the two ends of the square core, and can only rotate around their own axis when in use, and a groove which is connected to the side wall of the handle head is provided. The ball hole opposite to the ball groove; the cam is rotatably arranged in the handle head, and its outer periphery is provided with a receiving groove and an ejection groove connected along the circumferential direction, the radial depth of the ejection groove is smaller than the radial depth of the receiving groove, and the two cams are connected together by a connecting rod rotatably arranged in the square core; the transmission block is slidably arranged in the neck portion of the inner handle, one end of which is provided with a lever extending outside the neck portion, and the other end is linked to the cam in the inner handle, and the transmission block can drive the cam to rotate when sliding, wherein when the transmission block is on one side of the neck portion, the locking ball is in the ejection groove, the ball hole and the ball groove, and when the transmission block slides to the other side, it drives the cam to rotate and makes the receiving groove, the ball hole and the ball groove relative to each other.

[0015] According to the above description and practice, the door handle assembly with a locking structure described in the utility model can prevent the handle from rotating with the mounting seat under certain conditions by arranging a handle head, a cam, a transmission block and a locking ball in the neck portion of the handle, and utilizing the movement of the transmission block and the cooperation between the locking ball and the handle head, the cam and the locking plate on the mounting seat, that is, the door handle is in a locked state. And in the locked state, after sliding the transmission block in the opposite direction, the rotation restriction between the handle and the mounting seat can also be released. The entire locking and unlocking process does not require the cooperation of relevant structures in the door lock, and can be achieved only by relying on the structure of the door handle assembly itself. In addition, after the lever that controls the sliding of the transmission block is arranged on the inner side of the L-shaped handle, the exposed part of the locking structure can also be hidden to a certain extent, so that the front visible surface of the handle has a relatively simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a door handle assembly with a locking structure involved in the first embodiment of the present utility model.

[0017] Figure 2 It is a schematic cross-sectional structure diagram of a door handle assembly with a locking structure involved in the first embodiment of the present utility model.

[0018] Figure 3 It is a schematic diagram of the exploded structure of the door handle assembly with a locking structure involved in the first embodiment of the present utility model.

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the neck portion of the inner handle involved in the first embodiment of the utility model in the unlocked state.

[0020] Figure 5 It is a schematic cross-sectional structure diagram of the neck portion of the inner handle involved in the first embodiment of the present utility model in a locked state.

[0021] Figure 6 This is a schematic cross-sectional structure diagram of a cam and a handle head designed in an embodiment of the utility model, to show the relevant structure at the positioning hole.

[0022] The reference numerals in the figure are:

[0023] 11. First mounting seat 12. Second mounting seat

[0024] 13. Inner handle 14. Outer handle

[0025] 15. Square core 16. Connecting rod

[0026] 17. Emergency knob 18. Cover

[0027] 21. Cam 22. Transmission block

[0028] 23. Locking ball 24. Locking plate

[0029] 25. Handle 26. Lever

[0030] 27. Rotating wheel 28. Latch

[0031] 31. Ball groove 32. Ball hole

[0032] 33. Accommodation groove 34. Ejection groove

[0033] 35. Guide groove 41. Positioning hole

[0034] 42. Compression spring 43. Positioning ball

[0035] 44. First positioning groove 45. Second positioning groove DETAILED DESCRIPTION

[0036] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0037] In addition, the accompanying drawings are only schematic diagrams of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second", etc. are only used as marks, and are not restrictions on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0038] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] Embodiment 1

[0040] In this embodiment, a door handle assembly with a locking structure is disclosed. Please refer to Figures 1 to 5 The door handle assembly with a locking structure in this embodiment includes a first mounting seat 11, a second mounting seat 12, an inner handle 13, an outer handle 14, a cam 21, a transmission block 22 and a locking ball 23.

[0041] A first mounting hole is provided in the middle of the first mounting seat 11, and a locking plate 24 is formed on the side close to the inner handle 13, and a ball groove 31 is provided on the inner side of the locking plate 24. A second mounting hole is provided in the middle of the second mounting seat 12, and a locking plate 24 is formed on the side close to the outer handle 14, and a ball groove 31 is also provided on the inner side of the locking plate 24. Figure 3It can be seen that the first mounting seat 11 and the second mounting seat 12 are basically symmetrically arranged. In practice, the two are fixed on both sides of the door leaf or the lock, and the inner handle 13 and the outer handle 14 are rotatably mounted thereon.

[0042] Specifically, a cylindrical handle head 25 is fixed in the axial neck of the inner handle 13 and the outer handle 14, and the inner handle 13 and the outer handle 14 are rotatably mounted on the first mounting seat 11 and the second mounting seat 12 through the handle head 25. When the door handle assembly is installed on the door lock, the two handle heads 25 are symmetrically arranged and respectively connected to the two ends of the square core 15, and can only rotate around their own axis when in use. In actual use, the user unlocks the door by rotating the inner handle 13 or the outer handle 14 and then rotating the square core 15. For example, Figure 2 and Figure 3 As shown, when one end of the handle head 25 is inserted into the mounting hole, a retaining spring is installed on one side of the handle head 25 near the middle of the door lock to prevent the handle head 25 from moving outward, that is, the handle is rotated and installed on the mounting seat and will not fall off. In addition, a ball hole 32 is provided on the outer peripheral side wall of the handle head 25, which is opposite to the ball groove 31.

[0043] Please combine Figure 2 , Figure 4 and Figure 5 The cam 21 is rotatably arranged in the handle head 25, and the outer circumference thereof is provided with a receiving groove 33 and an ejection groove 34 connected in the circumferential direction, and the radial depth of the ejection groove 34 is smaller than the radial depth of the receiving groove 33. The two cams 21 respectively arranged in the inner handle 13 and the outer handle 14 are connected together via a connecting rod 16 rotatably arranged in the square core 15. Therefore, when the cam 21 in one handle rotates, the cam 21 in the other handle will also rotate simultaneously.

[0044] The transmission block 22 is slidably disposed in the neck portion of the inner handle 13, and one end of the transmission block 22 is provided with a lever 26 extending outside the neck portion, and the other end is linked to the cam 21 in the inner handle 13. When the transmission block 22 slides, the cam 21 can be driven to rotate. In other words, the linkage between the transmission block 22 and the cam 21 can realize the conversion between linear motion and rotational motion. For example, in Figure 3 In the embodiment, the lever 26 is pushed axially to the left to move the transmission block 22 to the left, thereby driving the cam 21 to rotate clockwise; and then the lever 26 is pushed axially to the right to move the transmission block 22 to the right, thereby driving the cam 21 to rotate counterclockwise and reset.

[0045] Specifically, when the transmission block 22 is located at one side of the journal, for example Figure 2 The locking ball 23 is in the ejection groove 34, the ball hole 32 and the ball groove 31, that is, Figure 5In the state shown, at this time, since the handle head 25 and the locking plate 24 are restricted by the locking ball 23, and the ejection groove 34 prevents the locking ball 23 from moving toward the middle, the handle head 25 and the locking plate 24 cannot rotate relative to each other, so the inner handle 13 and the outer handle 14 cannot rotate, that is, the handle is in a locked state. When the push lever 26 is moved to the other side of the shaft neck so that the transmission block 22 is on the other side of the shaft neck, for example Figure 2 The right side of the cam 21 is driven to rotate, and finally the accommodating groove 33, the ball hole 32 and the ball groove 31 are opposite to each other, that is, Figure 4 In the state shown, at this time, the side close to the middle of the locking ball 23 is a deep receiving groove 33. When the inner handle 13 or the outer handle 14 is rotated, the handle head 25 and the locking plate 24 produce a certain relative rotation. The ball groove 31 will push the locking ball 23 to move to the middle, and then enter the receiving groove 33 and the ball hole 32, so that the handle head 25 and the locking plate 24 can rotate completely relative to each other. Correspondingly, the inner handle 13 and the outer handle 14 can also rotate freely, that is, the handle is in the unlocked state.

[0046] The door handle assembly with a locking structure is provided with a handle head 25, a cam 21, a transmission block 22 and a locking ball 23 in the neck portion of the handle. By utilizing the movement of the transmission block 22 and the cooperation between the locking ball 23, the handle head 25, the cam 21 and the locking plate 24 on the mounting seat, the handle and the mounting seat can be prevented from rotating under certain conditions, that is, the door handle is in a locked state. In addition, in the locked state, after the transmission block 22 is slid in the opposite direction, the rotation restriction between the handle and the mounting seat can be released. The entire locking and unlocking process does not require the cooperation of relevant structures in the door lock, and can be achieved only by relying on the structure of the door handle assembly itself.

[0047] Please refer to Figure 2 and Figure 3In this embodiment, a rotating wheel 27 is fixedly provided at the right end of the cam 21 in the inner handle 13, and a spiral guide groove 35 is provided on the rotating wheel 27, and the length direction of the guide groove 35 is inclined relative to the axial direction. A latch 28 is provided at the other end of the transmission block 22 and is slidably assembled in the guide groove 35, and the transmission block 22 is slidably arranged in the journal portion along the axial direction. When the lever 26 is pushed to the left along the axial direction to move the transmission block 22 to the left, the latch 28 first abuts against the left side of the guide groove 35. Since the rotating wheel 27 has only a rotational freedom, when the latch 28 continues to move to the left, the cam 21 can be driven to rotate clockwise; then, when the lever 26 is pushed to the right along the axial direction to move the transmission block 22 to the right, the latch 28 first abuts against the right side of the guide groove 35. Since the rotating wheel 27 has only a rotational freedom, when the latch 28 continues to move to the right, the cam 21 can be driven to rotate counterclockwise and reset. Since the rotating wheel 27 is fixedly connected to the cam 21, the positive and negative rotation of the cam 21 can be controlled by pushing and pulling the lever 26. In this embodiment, a form of matching the latch 28 with the inclined guide groove 35 is provided to realize the conversion between the linear motion and the rotational motion between the transmission block 22 and the cam 21. In other embodiments, existing linkage modes such as matching the rack and the gear, the worm and the worm can also be used to realize the conversion between the linear motion and the rotational motion between the two components.

[0048] In addition, in this embodiment, the rotating wheel 27 is a cylindrical structure, and the side wall is provided with two guide grooves 35, and the two ends of the latch 28 are respectively slidably assembled in the two guide grooves 35. In this form, the linkage between the transmission block 22 and the rotating wheel 27 is relatively stable. Of course, in other embodiments, the number of guide grooves 35 can also be modified, such as one or more, and a corresponding number of latches 28 can be provided on the transmission block 22, and the above linkage between the transmission block 22 and the rotating wheel 27 can also be achieved.

[0049] In addition, in this embodiment, more than two locking plates 24 are evenly arranged on the first mounting seat 11 and the second mounting seat 12, and a ball groove 31 is arranged on the inner side of each locking plate 24; more than two ball holes 32 are evenly arranged on each handle head 25; more than two receiving grooves 33 and ejection grooves 34 are evenly arranged on each cam 21. And the number of ball grooves 31, ball holes 32, receiving grooves 33, ejection grooves 34 and locking balls 23 is the same. Under this structural form, the linkage between the mounting seat, the handle head 25 and the cam 21 can be more stable, ensuring that the door handle assembly can operate smoothly.

[0050] In addition, in this embodiment, the inner handle 13 is an L-shaped handle, which includes a shaft neck and a gripping portion, and the lever 26 is disposed on one side of the shaft neck close to the gripping portion. Figures 1 to 3As shown, after the lever 26 for controlling the sliding movement of the transmission block 22 is arranged on the inner side of the L-shaped handle, the exposed part of the locking structure can be hidden to a certain extent, so that the front visible surface of the inner handle 13 has a relatively simple structure.

[0051] In addition, in this embodiment, an emergency knob 17 is also provided to release the locked state of the door handle assembly from the outside of the door in an emergency. Figure 2 and Figure 3 The emergency knob 17 is arranged on the outer handle 14, and its right end is connected to the cam 21 in the outer handle 14. The cam 21 can be rotated by turning the emergency knob 17. Figure 5 In the locked state, after the emergency knob 17 is turned, the cam 21 in the outer handle 14 rotates accordingly. With the help of the connecting rod 16, the cam 21 in the inner handle 13 also rotates accordingly, and then the accommodating groove 33 is aligned with the ball hole 32 and the ball groove 31, thereby releasing the locked state of the door handle assembly. At this time, the outer handle 14 can be turned to achieve unlocking.

[0052] In addition, in this embodiment, the emergency knob 17 is arranged inside the outer handle 14, and a detachable cover plate 18 is arranged on the front end surface of the outer handle 14. When the emergency knob 17 is needed, the cover plate 18 can be removed to expose the emergency knob 17. This structural form can make the front end surface of the outer handle 14 simpler. In a specific embodiment, the emergency knob 17 can also be set as a lock core, and the emergency knob 17 can only be turned under a specific key, which can improve the safety of the door handle assembly.

[0053] In addition, please combine Figure 2 and Figure 6 In this embodiment, a positioning hole 41 is provided on the outer side wall of the cam 21, a compression spring 42 and a positioning ball 43 are provided in the positioning hole 41, and a first positioning groove 44 and a second positioning groove 45 are provided on the inner wall of the handle head 25. When the locking ball 23 is in the ejection groove 34, the ball hole 32 and the ball groove 31, that is, when the door handle assembly is in a locked state, the compression spring 42 presses the positioning ball 43 against the first positioning groove 44. When the lever 26 is pushed to rotate the cam 21, the accommodating groove 33, the ball hole 32 and the ball groove 31 are relative, that is, when the door handle assembly is in an unlocked state, the compression spring 42 and the positioning ball 43 move accordingly, and finally the compression spring 42 presses the positioning ball 43 against the second positioning groove 45. The positioning of the cam 21 and the handle can be achieved through this structure, and the user can more easily know the rotation position of the cam 21 when pushing the lever 26 during use.

[0054] Embodiment 2

[0055] Compared with the first embodiment, in this embodiment, the door handle assembly with a locking structure also includes a first mounting seat 11, a second mounting seat 12, an inner handle 13 and an outer handle 14. The difference between the two is that the structure of the handle head 25, the cam 21, the transmission block 22 and the locking ball 23 is only provided in the inner handle 13.

[0056] Specifically, a first mounting hole is provided in the middle of the first mounting seat 11, and a locking plate 24 is formed on one side thereof close to the inner handle 13, and a ball groove 31 is provided on the inner side of the locking plate 24. A cylindrical handle head 25 is fixedly provided in the axial neck of the inner handle 13, and one end of the handle head 25 is rotatably provided in the first mounting hole and connected to the square core 15, and can only rotate around its own axis when in use, and a ball hole 32 is provided on the side wall of the handle head 25 opposite to the ball groove 31. The outer handle 14 is rotatably connected to the second mounting seat 12, and one end is connected to the square core 15. The cam 21 is rotatably provided in the handle head 25, and a circumferentially connected receiving groove 33 and an ejection groove 34 are provided on its outer periphery, and the radial depth of the ejection groove 34 is smaller than the radial depth of the receiving groove 33. The transmission block 22 is slidably disposed in the neck portion of the inner handle 13, and one end of the transmission block 22 is provided with a lever 26 extending outside the neck portion, and the other end is linked with the cam 21. When the transmission block 22 slides, the cam 21 can be driven to rotate. In other words, the linkage between the transmission block 22 and the cam 21 can realize the conversion between linear motion and rotational motion. For example, Figure 3 In the embodiment, the lever 26 is pushed axially to the left to move the transmission block 22 to the left, thereby driving the cam 21 to rotate clockwise; and then the lever 26 is pushed axially to the right to move the transmission block 22 to the right, thereby driving the cam 21 to rotate counterclockwise and reset.

[0057] Specifically, when the transmission block 22 is located at one side of the journal, for example Figure 2 The locking ball 23 is in the ejection groove 34, the ball hole 32 and the ball groove 31, that is, Figure 5 In the state shown, at this time, since the handle head 25 and the locking plate 24 are restricted by the locking ball 23, and the ejection groove 34 prevents the locking ball 23 from moving toward the middle, the handle head 25 and the locking plate 24 cannot rotate relative to each other, so the inner handle 13 cannot rotate, and correspondingly, the square core 15 and the outer handle 14 cannot rotate either, that is, the door handle assembly is in a locked state. When the push rod 26 moves to the other side of the shaft neck, so that the transmission block 22 is on the other side of the shaft neck, for example Figure 2 The right side of the cam 21 is driven to rotate, and finally the accommodating groove 33, the ball hole 32 and the ball groove 31 are opposite to each other, that is, Figure 4In the state shown, at this time, the side close to the middle of the locking ball 23 is a deep receiving groove 33. When the inner handle 13 or the outer handle 14 is rotated, the handle head 25 and the locking plate 24 produce a certain relative rotation. The ball groove 31 will push the locking ball 23 to move to the middle, and then enter the receiving groove 33 and the ball hole 32, so that the handle head 25 and the locking plate 24 can rotate completely relative to each other. Correspondingly, the inner handle 13 and the outer handle 14 can also rotate freely, that is, the handle is in the unlocked state.

[0058] The door handle assembly with a locking structure is provided with a handle head 25, a cam 21, a transmission block 22 and a locking ball 23 in the axial neck of the inner handle 13. By utilizing the movement of the transmission block 22 and the cooperation between the locking ball 23, the handle head 25, the cam 21 and the locking plate 24 on the mounting seat, it is possible to prevent the inner handle 13 from rotating with the first mounting seat 11 under certain conditions, and to prevent the outer handle 14 from rotating, that is, the door handle assembly is in a locked state. In addition, in the locked state, after the transmission block 22 is slid in the opposite direction, the rotation restriction between the inner handle 13 and the first mounting seat 11 can also be released. The entire locking and unlocking process does not require the cooperation of relevant structures in the door lock, and can be achieved only by relying on the structure of the door handle assembly itself.

[0059] In addition, in this embodiment, an emergency knob 17 is also provided to unlock the door handle assembly from the outside of the door in an emergency. Specifically, a connecting rod 16 is rotatably provided in the square core 15, one end of which is fixedly connected to the cam 21, and the other end extends to the outer handle 14. The emergency knob 17 is provided on the outer handle 14, and one end of which is connected to the connecting rod 16. Therefore, turning the emergency knob 17 can turn the cam 21 in the inner handle 13. For example, in Figure 5 In the locked state, after the emergency knob 17 is turned, the cam 21 in the inner handle 13 will also rotate with the help of the connecting rod 16, and then the accommodating groove 33 will be opposite to the ball hole 32 and the ball groove 31, thereby releasing the locked state of the door handle assembly. At this time, turning the outer handle 14 can drive the square core 15 to rotate to achieve unlocking.

[0060] In addition, in this embodiment, the emergency knob 17 is arranged inside the outer handle 14, and a detachable cover plate 18 is arranged on the front end surface of the outer handle 14. When the emergency knob 17 is needed, the cover plate 18 can be removed to expose the emergency knob 17. This structural form can make the front end surface of the outer handle 14 simpler. In a specific embodiment, the emergency knob 17 can also be set as a lock core, and the emergency knob 17 can only be turned under a specific key, which can improve the safety of the door handle assembly.

[0061] Other parts such as the positioning hole 41, the compression spring 42, the positioning ball 43, and the specific connection structure between the transmission block 22 and the cam 21 are the same as those in the first embodiment and will not be described in detail here.

[0062] Embodiment 3

[0063] Compared with the first embodiment, in this embodiment, the door handle assembly with a locking structure also includes a first mounting seat 11, a second mounting seat 12, an inner handle 13 and an outer handle 14. The difference between the two is that the structures of the handle head 25, the cam 21 and the locking ball 23 are arranged in the outer handle 14, and the main body of the transmission block 22 is located in the inner handle 13.

[0064] Specifically, a first mounting hole is provided in the middle of the first mounting seat 11, and the inner handle 13 is rotatably connected to the first mounting seat 11, and one end thereof is connected to the square core 15. A second mounting hole is provided in the middle of the second mounting seat 12, and a locking plate 24 is formed on the side close to the outer handle 14, and a ball groove 31 is provided on the inner side of the locking plate 24. A cylindrical handle head 25 is fixedly provided in the axial neck of the outer handle 14, and one end of the handle head 25 is rotatably provided in the second mounting hole and connected to the square core 15, and can only rotate around its own axis when in use, and a ball hole 32 opposite to the ball groove 31 is provided on the side wall of the handle head 25. The cam 21 is rotatably provided in the handle head 25, and a circumferentially connected receiving groove 33 and an ejection groove 34 are provided on its outer periphery, and the radial depth of the ejection groove 34 is smaller than the radial depth of the receiving groove 33. The transmission block 22 is slidably disposed in the neck portion of the inner handle 13, and one end of the transmission block 22 is provided with a lever 26 extending outside the neck portion, and the other end is linked with the cam 21. When the transmission block 22 slides, the cam 21 can be driven to rotate. In other words, the linkage between the transmission block 22 and the cam 21 can realize the conversion between linear motion and rotational motion. For example, Figure 3 In the embodiment, the lever 26 is pushed axially to the left to move the transmission block 22 to the left, thereby driving the cam 21 to rotate clockwise; and then the lever 26 is pushed axially to the right to move the transmission block 22 to the right, thereby driving the cam 21 to rotate counterclockwise and reset.

[0065] Specifically, when the transmission block 22 is located at one side of the journal, for example Figure 2 The locking ball 23 is in the ejection groove 34, the ball hole 32 and the ball groove 31, that is, Figure 5 In the state shown, at this time, since the handle head 25 and the locking plate 24 are restricted by the locking ball 23, and the ejection groove 34 prevents the locking ball 23 from moving toward the middle, the handle head 25 and the locking plate 24 cannot rotate relative to each other, so the outer handle 14 cannot rotate, and correspondingly, the square core 15 and the inner handle 13 cannot rotate either, that is, the door handle assembly is in a locked state. When the push rod 26 moves to the other side of the shaft neck so that the transmission block 22 is on the other side of the shaft neck, for example Figure 2 The right side of the cam 21 is driven to rotate, and finally the accommodating groove 33, the ball hole 32 and the ball groove 31 are opposite to each other, that is, Figure 4 In the state shown, at this time, the side close to the middle of the locking ball 23 is a deep receiving groove 33. When the inner handle 13 or the outer handle 14 is rotated, the handle head 25 and the locking plate 24 produce a certain relative rotation. The ball groove 31 will push the locking ball 23 to move to the middle, and then enter the receiving groove 33 and the ball hole 32, so that the handle head 25 and the locking plate 24 can rotate completely relative to each other. Correspondingly, the inner handle 13 and the outer handle 14 can also rotate freely, that is, the handle is in the unlocked state.

[0066] The door handle assembly with a locking structure is provided with a handle head 25, a cam 21, and a locking ball 23 in the axial neck of the outer handle 14, and a transmission block 22 is provided in the axial neck of the inner handle 13. By utilizing the movement of the transmission block 22 and the cooperation between the locking ball 23, the handle head 25, the cam 21, and the locking plate 24 on the mounting seat, it is possible to prevent the outer handle 14 from rotating with the second mounting seat 12 under certain conditions, that is, the door handle assembly is in a locked state. In addition, in the locked state, after sliding the transmission block 22 in the opposite direction, the rotation restriction between the outer handle 14 and the second mounting seat 12 can also be released. The entire locking and unlocking process does not require the cooperation of relevant structures in the door lock, and can be achieved only by relying on the structure of the door handle assembly itself.

[0067] In this embodiment, a rotating wheel 27 is fixedly provided at one end of the cam 21, and a spiral guide groove 35 is provided on the rotating wheel 27. The other end of the transmission block 22 is slidably provided in the square core 15, and a latch 28 is provided at the end to be slidably assembled in the guide groove 35, and the transmission block 22 is slidably provided in the said journal portion along the axial direction. When the lever 26 is pushed axially to the left to move the transmission block 22 to the left, the latch 28 first abuts against the left side of the guide groove 35. Since the rotating wheel 27 has only a rotational freedom, when the latch 28 continues to move to the left, the cam 21 can be driven to rotate clockwise; then, when the lever 26 is pushed axially to the right to move the transmission block 22 to the right, the latch 28 first abuts against the right side of the guide groove 35. Since the rotating wheel 27 has only a rotational freedom, when the latch 28 continues to move to the right, the cam 21 can be driven to rotate counterclockwise and reset. Based on the fixed connection between the rotating wheel 27 and the cam 21, the positive and negative rotation of the cam 21 can be controlled by pushing and pulling the lever 26. In this embodiment, a form of matching the latch 28 with the inclined guide groove 35 is provided to realize the conversion between the linear motion and the rotational motion between the transmission block 22 and the cam 21. In other embodiments, existing linkage modes such as matching the rack with the gear, the turbine with the worm gear, etc. can also be used to realize the conversion between the linear motion and the rotational motion between the two components.

[0068] In addition, in this embodiment, an emergency knob 17 is provided to unlock the door handle assembly from the outside of the door in an emergency. Specifically, the emergency knob 17 is provided on the outside handle 14, and one end of the emergency knob 17 is directly connected to the cam 21. Therefore, turning the emergency knob 17 can turn the cam 21 in the outside handle 14. Figure 5 In the locked state, after the emergency knob 17 is turned, the cam 21 in the outer handle 14 will also rotate accordingly, thereby making the accommodating groove 33 face the ball hole 32 and the ball groove 31, thereby releasing the locked state of the door handle assembly. At this time, turning the outer handle 14 can drive the square core 15 to rotate to achieve unlocking.

[0069] In addition, in this embodiment, the emergency knob 17 is arranged inside the outer handle 14, and a detachable cover plate 18 is arranged on the front end surface of the outer handle 14. When the emergency knob 17 is needed, the cover plate 18 can be removed to expose the emergency knob 17. This structural form can make the front end surface of the outer handle 14 simpler. In a specific embodiment, the emergency knob 17 can also be set as a lock core, and the emergency knob 17 can only be turned under a specific key, which can improve the safety of the door handle assembly.

[0070] Other structures such as the positioning hole 41, the compression spring 42, the positioning ball 43, etc. are the same as those in the first embodiment and will not be described in detail here.

[0071] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A door handle assembly with a locking structure, characterized in that: It includes a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball; wherein A first mounting hole is provided in the middle of the first mounting seat, a locking plate is formed on a side close to the inner handle, and a ball groove is provided on the inner side of the locking plate; A cylindrical handle head is fixedly provided in the neck portion of the inner handle, one end of the handle head is rotatably provided in the first mounting hole and connected to the square core, and can only rotate around its own axis when in use, and a ball hole opposite to the ball groove is provided on the side wall of the handle head; The outer handle is rotatably connected to the second mounting seat, and one end is connected to the square core; The cam is rotatably arranged in the handle head, and a receiving groove and an ejection groove are arranged on its outer periphery, which are connected in the circumferential direction, and the depth of the ejection groove in the radial direction is smaller than the depth of the receiving groove in the radial direction; The transmission block is slidably disposed in the neck portion of the inner handle, and one end of the transmission block is provided with a lever extending outside the neck portion, and the other end is linked to the cam. The transmission block can drive the cam to rotate when it slides. When the transmission block is on one side of the neck portion, the locking ball is in the ejection groove, the ball hole and the ball groove. When the transmission block slides to the other side, the cam is driven to rotate, and the accommodating groove, the ball hole and the ball groove are opposite to each other.

2. The door handle assembly with a locking structure according to claim 1, characterized in that: A rotating wheel is fixedly provided at one end of the cam, a spiral guide groove is provided on the rotating wheel, a latch slidably assembled in the guide groove is provided at the other end of the transmission block, and the transmission block is axially slidably arranged in the shaft neck.

3. The door handle assembly with a locking structure according to claim 2, characterized in that: The rotating wheel is a cylindrical structure, and the side wall is provided with two guide grooves, and the two ends of the latch are respectively slidably assembled in the two guide grooves.

4. The door handle assembly with a locking structure according to claim 1, characterized in that: More than two locking plates and ball grooves are evenly arranged on the first mounting seat; More than two ball bearing holes are evenly arranged on the handle head; The cam is evenly provided with more than two accommodating grooves and ejecting grooves; The numbers of the ball grooves, ball holes, accommodating grooves, ejection grooves and locking balls are the same.

5. The door handle assembly with a locking structure according to claim 1, characterized in that: The inner handle is an L-shaped handle, comprising a shaft neck portion and a gripping portion, and the shifting rod is arranged on a side of the shaft neck portion close to the gripping portion.

6. The door handle assembly with a locking structure according to any one of claims 1 to 5, characterized in that: Also includes: A connecting rod, rotatably disposed in the square core, one end of which is fixedly connected to the cam and the other end of which extends into the outer handle; An emergency knob is arranged on the outer handle, and one end of the emergency knob is connected to the connecting rod.

7. The door handle assembly with a locking structure according to any one of claims 1 to 5, characterized in that: A positioning hole is provided on the outer side wall of the cam, a compression spring and a positioning ball are provided in the positioning hole, and a first positioning groove and a second positioning groove are provided on the inner wall of the handle head, wherein When the locking ball is in the ejection groove, the ball hole and the ball groove, the compression spring presses the positioning ball tightly against the first positioning groove; when the accommodating groove, the ball hole and the ball groove are opposite to each other, the compression spring presses the positioning ball tightly against the second positioning groove.

8. A door handle assembly with a locking structure, characterized in that: It includes a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball; wherein A first mounting hole is provided in the middle of the first mounting seat, the inner handle is rotatably connected to the first mounting seat, and one end of the inner handle is connected to the square core; A second mounting hole is provided in the middle of the second mounting seat, a locking plate is formed on a side close to the outer handle, and a ball groove is provided on the inner side of the locking plate; A cylindrical handle head is fixedly provided in the neck portion of the outer handle, one end of the handle head is rotatably provided in the second mounting hole and connected to the square core, and can only rotate around its own axis when in use, and a ball hole opposite to the ball groove is provided on the side wall of the handle head; The cam is rotatably arranged in the handle head, and a receiving groove and an ejection groove are arranged on its outer periphery, which are connected in the circumferential direction, and the depth of the ejection groove in the radial direction is smaller than the depth of the receiving groove in the radial direction; The transmission block is slidably disposed in the neck portion of the inner handle, and one end of the transmission block is provided with a lever extending outside the neck portion, and the other end is linked to the cam. The transmission block can drive the cam to rotate when it slides. When the transmission block is on one side of the neck portion, the locking ball is in the ejection groove, the ball hole and the ball groove. When the transmission block slides to the other side, the cam is driven to rotate, and the accommodating groove, the ball hole and the ball groove are opposite to each other.

9. The door handle assembly with a locking structure according to claim 8, characterized in that: A rotating wheel is fixedly provided at one end of the cam, and a spiral guide groove is provided on the rotating wheel. The other end of the transmission block is slidably arranged in the square core, and a pin slidably assembled in the guide groove is provided at the end. The transmission block is axially slidably arranged in the shaft neck.

10. The door handle assembly with a locking structure according to claim 8, characterized in that: The inner handle is an L-shaped handle, comprising a shaft neck portion and a gripping portion, and the shifting rod is arranged on a side of the shaft neck portion close to the gripping portion.

11. The door handle assembly with a locking structure according to any one of claims 8 to 10, characterized in that: Also includes: An emergency knob is arranged on the outer handle, and one end of the emergency knob is connected to the cam.

12. The door handle assembly with a locking structure according to any one of claims 8 to 10, characterized in that: A positioning hole is provided on the outer side wall of the cam, a compression spring and a positioning ball are provided in the positioning hole, and a first positioning groove and a second positioning groove are provided on the inner wall of the handle head, wherein When the locking ball is in the ejection groove, the ball hole and the ball groove, the compression spring presses the positioning ball tightly against the first positioning groove; when the accommodating groove, the ball hole and the ball groove are opposite to each other, the compression spring presses the positioning ball tightly against the second positioning groove.

13. A door handle assembly with a locking structure, characterized in that: It includes a first mounting seat, a second mounting seat, an inner handle, an outer handle, a cam, a transmission block and a locking ball; wherein A first mounting hole is provided in the middle of the first mounting seat, a locking plate is formed on a side close to the inner handle, and a ball groove is provided on the inner side of the locking plate; A second mounting hole is provided in the middle of the second mounting seat, a locking plate is formed on a side close to the outer handle, and a ball groove is provided on the inner side of the locking plate; A cylindrical handle head is fixedly provided in the shaft neck of the inner handle and the outer handle, the two handle heads are symmetrically arranged and respectively connected to the two ends of the square core, and can only rotate around their own axis when in use, and a ball hole opposite to the ball groove is provided on the side wall of the handle head; The cam is rotatably arranged in the handle head, and a receiving groove and an ejection groove are arranged on its outer circumference, which are connected in the circumferential direction. The depth of the ejection groove in the radial direction is smaller than the depth of the receiving groove in the radial direction. The two cams are connected together via a connecting rod rotatably arranged in the square core. The transmission block is slidably disposed in the neck portion of the inner handle, and one end of the transmission block is provided with a lever extending outside the neck portion, and the other end is linked to a cam in the inner handle. The transmission block can drive the cam to rotate when it slides. When the transmission block is on one side of the neck portion, the locking ball is in the ejection groove, the ball hole and the ball groove. When the transmission block slides to the other side, the cam is driven to rotate, and the accommodating groove, the ball hole and the ball groove are opposite to each other.

Images